I had an app on my MacBook that I never used. I recently did a clean install of Mountain Lion on the same MacBook (not using the Migration Assistant or anything to copy my old data). I reinstalled the apps that I wanted from the App Store (and obviously didn't install the ones I used to have that I no longer wanted).

Now the App Store shows one of my old apps in the updates tab, even though I have never touched that app since my reinstall. There is only one app doing this, there are other apps that I didn't end up installing that I used to have, but they don't appear as updates like this one.

I have tried everything to get rid of the app from the updates. I have even succumbed to the frustration and clicked update, which installed the app, then I deleted it from my computer, and then the app reappeared in the updates immediately.

Any help on how I can get this app to leave me alone forever would be appreciated. Is there a way I can hide an app from the updates tab?